feat: saved SSH hosts per user, the way in sealed with AES-GCM under a server key kept beside the database

internal/server/handlers_panel_term.go

@@ -41,6 +41,10 @@ func (s *Server) handlePanelOpen(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	}
+	if err := s.fillSaved(s.currentAdmin(r).ID, body.SSH); err != nil {
+		writeJSON(w, map[string]any{"error": err.Error()})
+		return
+	}
 	if t := body.SSH; t != nil {
 		t.Host, t.User = strings.TrimSpace(t.Host), strings.TrimSpace(t.User)
 		if t.Port == 0 {